The human brain uses approximately as much energy as a 10 watt light bulb.
120
The human body contains over a billion miles of DNA.
147
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Pain occurs when sounds are above 130 db.
124
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Yawns are more contagious among people with closer relationships.
163